Tension means



Feb. 17, 1925. 1,526,918

' E. J. LIPPS TENS ION MEANS Filed Sept. 8, 1924 2 Sheets-Sheet 1 Feb. 17. 1925. 1,526,918

E. J. LIPPS TENSION MEANS Filed Sept. 8 1924 2 Sheets-Sheet 2 J WITNESS Patented Feb. 17, 1925.

UNITED STATES PATENT OFFICE.

EMORY J. LIPPS, OF FOUNTAIN HILL BOROUGH, PENNSYLVANIA.

TEN SION MEANS.

Application filed September To all whom it may concern:

Be it known that I, EMORY J. LIPPS, a citizen of the United States, residing at borough of Fountain Hill, in the county of Lehigh and State of Pennsylvania, have invented certain new and useful Improvements in Tension Means, of which the following is a specification.

ThlS invention relates to mechanlsm whereby yarn is drawn from a spool or bobyarn. Another object is to provide an improved means for stopping the drawing of the yarn on breakage or undue slackness of the yarn or to its opposing undue resistance to the draft.

'In the drawings, a

Fig. 1 is a vertical sectional view of. a machine embodying the invention;

Fig. 2 is a front elevation of what is seen in Fig. 1; I

Fig. 3 is a plan of the principal elements involved in the invention;

Fig. 4 is a side elevation of said elements; and

Fig. 5 is a front elevation of certain of the elements shown in Figs. 4 and 5.

On the frame 1 is arranged suitable draft means for the yarn, the same comprising a spool or bobbin 2 journaled in brackets 3 of the frame on a horizontal axis and i a whirl 4 fixed on a suitably rotated horizontal shaft 5 and on which the spool 2 is adapted to peripherally rest andby which it is rotated; the draft means may include a guide 6 whereby the draft on the yarn is directed toward a point displaced longitudinally of the axis of the wound mass from which the yarn is drawn. There may also he means to lay the yarn windings on spool. 2 back and forth lengthwise of its axis, as

a, 1924. Serial No. 736,523.

a, vertical tubular spindle 11 (Fig. 4) upbelow the spool 2. The already mentioned endless yarn-guiding surface around which the yarn A wipes in being drawn from spool 10 by thedraft means is here afforded by a r1ng 13 (of I-shaped cross-section,:see Fig. 4) around which is freely movable a traveller-guide 14 for the yarn, such ring being the peripheral part of a skeleton cap 15 which is fitted over the head of the spool and thereby kept in operative position, having a central hole 15 the purpose of which will appear. An auxiliary endless yarn guldlng surface- 16, encompassing a space 17, is afforded by an annular part 18 upstanding from the cap concentrically thereof. I prefer to embody the two yarn-guid- 1ng surfaces in a single structure as described and shown, but of course this is not indispensable. I

A movable tension device with which the yarn has runnmg engagement between the auxiliary vyarn-guidlng surface and the draft means and which is normally urged toward the wound mass but is yieldable therefrom under the tension of the yarn and has its yarn-engaged ortion enterable into the space 17 is here a orded by a light lever 19 fulcrumed in the frame at 20 to move up and down and having asits thread-engaged portion the eye 19 adapted on account of a suitable upward bend 19 inthe lever, to enter the space 17 this lever is in the present case normally urged toward the wound mass 9 by gravity and for regulating its tendency thus to move subject to gravity it may have a nut 21 screwed thereon and serving as anadjustable counterweight.

It will be seen that in the absence of the I tween the tension at the start and thatat the end of the unwinding of the mass 9 (in itself of course objectionable) that where automatic stopping means dependent on tension of the yarn was employed, it was heretofore impossible to carry on the operationwithout automatic stopping occurringv due merely to such disparity, especially where e k yarn was being operated upon rot and the tension device, such as 19 or its equivalent, therefore had to be very sensitive in its action. By providing the auxiliary yarn-guiding surface 16 I overcome this difficulty. When, with 'surface 16 present, the tension incident to the wiping of the yarn around the yarn-guiding surface of ring 13' is least because the spool is then full such tension is augmented by that produced by the tension device being then allowed to assume its most depressed position, where its eye 19 holds the yarn in a bend over the surface 16; when the tension incident to the wiping of the yarn around the said surface of ring 13 is greatest because the spool is nearly empty the augmenting tension is reduced, the tension device being then elevated to the dotted position in said figure so that the bend of the Figs. 3, 1- and 5. The lever 19 has a projecting blade 19 thereof penetrated by a verti cal rod 22 carrying above and below and normally spaced from the blade the collars 22. This rod depends from the arm 2. a of a lever 23 fulcrumed on a horizontal axis in the frame 1 and normally held lightly bearing against any suitable stop 24 by a weight 23", so that a blade 23 of the lever is in the retracted position shown by full lines in Fig. 4. When, due to breakage or undue slackness in the yarn, the tension device falls unduly and so presses upon the lower collar 22, the rod will be depressed and tilt lever 23 past its center of gravity. which then thrusts its blade 23 between the spool 2 and its whirl 4, thereby stopping the rotation of the spool.- The rod has another collar 22 which underlies the forked end of a level-'24 fulcrumed on a stud 24 in the frame, the other endof this lever being connected by a link 25 with a lateral extension 23"- of arm 23" of lever 23. WVhen, due to unusual resistance of the yarn to draft, as' if some'convolutionof the yarn catches in thev mass 9 and fails to deliver, the tension device rises and so encounters the upper collar 22* the rod will be elevated and, acting through lever 24, tilt lever 23 to cause the stopping as before.

I have shown the invention in Figs. 1 and 2 in a system where several yarns (or strands) are combined to form a single yarn -.may all be incorporated one after another into the final yarn with an incidental winding of each around the yarn that comes from below. This I show not because it is in itself new but because it illustrates an application of my invention in which it has been successfully used and in which it is extremely necessary to maintain the tension of the component yarns equable at all times.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In combination, means to support a mass of yarn arranged in convolntions around a common axis, means to draw the yarn from the mass toward a point displaced from the package longitudinally of its axis, an endless yarn-guiding surface arranged around said axis near the end of the mass adjoining the draft means and around which the yarn wipes when subject to the draft'of the draft means, an auxiliary endless yarn-guiding surface arranged around said axis between the first surface and said draft means and around which the yarn also wipes when subject to the draft of the draft means, said auxiliary surface encompassing a free space, and a movable tension device with which the yarn has running engagement between the auxiliary surface and the draft means, said device being normally urged toward the mass but yieldable therefrom under tension of the yarn and having its yarn-engaged portion enterable into said space. I

2. In combination, means to support a mass of yarn arranged around a common axis and with said axis upright, means to draw the yarn from the mass to a. point above the same, an endless arn-guiding surface arranged around said axis near the upper end of the mass and around which the yarn wipes when subject to the draft of the draft means, an auxiliary endless yarnguiding surface arranged around said axis between the first surface and said draft means and around which the yarn alsowipes when subject to the draft of the draft means, said auxiliary surface encompassing a free space, and a movable tension device with which the yarn has rimning engagement hetweenthe auxiliary surface and the draft means, said device being normally held downward but yieldable upward under tension of the yarn and having its yarnengaged portion enterable into said space.

3. In combination, a frame, a wound bod arranged on the frame and having its win ings. arranged around a common vertical axis, means to draw the yarn from said body to a point above the same, a yarn-guidin structure supported on said body and inclu ing upper and lower endless yarn-guiding surfaces around which the yarn wipes in being drawn from said body by the draft means, the upper one of said surfaces encompassing a free space, and a movable tension device with which the yarn has running engagement between said upper endless surface and the draft means, said device being normally held downward but yicldable upward under tension of the yarn and having its yarn-engaged portion enterable into said space.

l. In combination, a frame, means to support a wound body therein, means to draw the yarn from said body, a stopping device for the second means movable into engagement therewith to stop the same upon application of force thereto in a given direction, a member movable in said direction to apply such force to said device and also in the reverse direction, means totransmit force from said member to said device in said direction when said member moves in the reverse direction, and a back-and-forthmovable tension device engaged by the yarn and adapted on movement in either direction to move said member one way or the other.

5. In combination, a frame, means to sup port a wound body therein, means to draw the yarn from said body, a stopping device for the second means movable intoengagement therewith to stop the same upon application of force thereto in a given directionea member movable in said direction to apply such force to said device and also in the reverse direction, a lever to transmit force from said member to said device in said ,dircction when said member moves in the reverse direction. and a back-and-forthmovable tension device engaged by the yarn and adapted on movement in,either direction to move said member one way or the other.

In testimony whereof I afiix my signature.

EMORY J. LIPPS. 

